200a40b332
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
195 lines
10 KiB
HTML
195 lines
10 KiB
HTML
|
||
<!--
|
||
|
||
Licensed to the Apache Software Foundation (ASF) under one or more
|
||
contributor license agreements. See the NOTICE file distributed with
|
||
this work for additional information regarding copyright ownership.
|
||
The ASF licenses this file to You under the Apache License, Version 2.0
|
||
(the "License"); you may not use this file except in compliance with
|
||
the License. You may obtain a copy of the License at
|
||
|
||
http://www.apache.org/licenses/LICENSE- 2.0
|
||
|
||
Unless required by applicable law or agreed to in writing, software
|
||
distributed under the License is distributed on an "AS IS" BASIS,
|
||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
See the License for the specific language governing permissions and
|
||
limitations under the License.
|
||
-->
|
||
|
||
|
||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
<HTML>
|
||
<HEAD>
|
||
<!-- generateKeywords macro -->
|
||
<META name="description" content="Apache Tuscany">
|
||
<META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource">
|
||
<!-- generateKeywords macro end -->
|
||
|
||
<LINK type="text/css" rel="stylesheet" href="http://tuscany.apache.org/stylesheets/default.css">
|
||
<LINK rel="SHORTCUT ICON" href="https://cwiki.apache.org/confluence/display/TUSCANY/$images/favicon.ico">
|
||
<TITLE>Apache Tuscany : Named parameters support</TITLE>
|
||
<META http-equiv="Content-Type" content="text/html;charset=UTF-8"></HEAD>
|
||
|
||
<BODY onload="init()">
|
||
<!-- topNav macro -->
|
||
<TABLE valign="top" border="0" cellspacing="0" cellpadding="0" width="100%" background="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg">
|
||
<TR>
|
||
<TD valing="top" align="left">
|
||
<A href="https://cwiki.apache.org/confluence/pages/viewpage.action?spaceKey=TUSCANY&title=$siteroot"><IMG src="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg" height="91" width="25" border="0"></A>
|
||
</TD>
|
||
<TD>
|
||
<A href="http://tuscany.apache.org/"><IMG src="http://tuscany.apache.org/images/TuscanyLogo.jpg" border="0"></A>
|
||
</TD>
|
||
|
||
<TD width="100%">
|
||
|
||
</TD>
|
||
|
||
<!-- Adds the edit page link to the top banner-->
|
||
<TD valign="bottom">
|
||
<DIV style="padding: 2px 10px; margin: 0px;">
|
||
<A href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=66139">
|
||
<IMG src="http://tuscany.apache.org/images/notep_16.gif" height="16" width="16" border="0" align="absmiddle" title="Edit Page"></A>
|
||
</DIV>
|
||
</TD>
|
||
|
||
</TR>
|
||
</TABLE>
|
||
<!-- topNav macro end -->
|
||
|
||
<!-- breadCrumbs macro -->
|
||
<TABLE border="0" cellpadding="2" cellspacing="0" width="100%">
|
||
<TR class="topBar">
|
||
<TD align="left" valign="middle" class="topBarDiv" nowrap="true" width="100%">
|
||
<A href="home.html" title="Apache Tuscany">Apache Tuscany</A> > <A href="home.html" title="Home">Home</A> > <A href="das-overview.html" title="DAS Overview">DAS Overview</A> > <A href="das-java.html" title="DAS Java">DAS Java</A> > <A href="das-java-documentation-menu.html" title="DAS Java Documentation Menu">DAS Java Documentation Menu</A> > <A href="das-java-developer-guide.html" title="DAS Java Developer Guide">DAS Java Developer Guide</A> > <A href="rdb-das-java.html" title="RDB DAS Java">RDB DAS Java</A> > <A href="rdb-das-user-guide.html" title="RDB DAS - User Guide">RDB DAS - User Guide</A> > <A href="" title="Named parameters support">Named parameters support</A>
|
||
</TD>
|
||
|
||
<TD align="right" valign="middle" class="topBarDiv" align="left" nowrap="true">
|
||
<A href="http://mail-archives.apache.org/mod_mbox/tuscany-user">User List</A> | <A href="http://mail-archives.apache.org/mod_mbox/tuscany-dev">Dev List</A> | <A href="http://issues.apache.org/jira/browse/Tuscany">Issue Tracker</A>
|
||
</TD>
|
||
</TR>
|
||
</TABLE>
|
||
<!-- breadCrumbs macro end -->
|
||
|
||
|
||
<TABLE border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF">
|
||
<TR>
|
||
<TD align="left" valign="top">
|
||
|
||
<!-- pageContent macro -->
|
||
<DIV id="PageContent">
|
||
|
||
<DIV class="pagecontent">
|
||
<DIV class="wiki-content">
|
||
<H1><A name="Namedparameterssupport-Namedparameterssupport"></A>Named parameters support</H1>
|
||
|
||
<P>JDB API requires indexed parameter setting. i.e. statement.setXXX(int, value). But in the DAS client<BR>
|
||
it may be helpful to provide named parameters setting on the command. This is particularly convenient<BR>
|
||
when the table involves many columns during insert/update. </P>
|
||
|
||
<P>Below are config schema portion supporting this.</P>
|
||
<DIV class="preformatted panel" style="border-width: 1px;"><DIV class="preformattedContent panelContent">
|
||
<PRE><xsd:complexType name="Parameter">
|
||
<xsd:attribute name="name" type="xsd:string"/>
|
||
<xsd:attribute name="columnType" type="xsd:string"/>
|
||
<xsd:attribute name="direction" type="xsd:string" default="IN"/>
|
||
<xsd:attribute name="index" type="xsd:int"/>
|
||
</xsd:complexType>
|
||
<xsd:complexType name="Parameters">
|
||
<xsd:sequence>
|
||
<xsd:element maxOccurs="unbounded" minOccurs="0" name="Parameter" type="config:Parameter"/>
|
||
</xsd:sequence>
|
||
</xsd:complexType>
|
||
<xsd:complexType name="Create">
|
||
<xsd:sequence>
|
||
<xsd:element maxOccurs="1" minOccurs="0" name="Parameters" type="config:Parameters"/>
|
||
</xsd:sequence>
|
||
<xsd:attribute name="sql" type="xsd:string"/>
|
||
</xsd:complexType>
|
||
<xsd:complexType name="Update">
|
||
<xsd:sequence>
|
||
<xsd:element maxOccurs="1" minOccurs="0" name="Parameters" type="config:Parameters"/>
|
||
</xsd:sequence>
|
||
<xsd:attribute name="sql" type="xsd:string"/>
|
||
</xsd:complexType>
|
||
<xsd:complexType name="Delete">
|
||
<xsd:sequence>
|
||
<xsd:element maxOccurs="1" minOccurs="0" name="Parameters" type="config:Parameters"/>
|
||
</xsd:sequence>
|
||
<xsd:attribute name="sql" type="xsd:string"/>
|
||
</xsd:complexType>
|
||
<xsd:complexType name="Command">
|
||
<xsd:sequence>
|
||
<xsd:element maxOccurs="unbounded" minOccurs="0" name="Parameter" type="config:Parameter"/>
|
||
<xsd:element maxOccurs="unbounded" minOccurs="0" name="ResultDescriptor" type="config:ResultDescriptor"/>
|
||
</xsd:sequence>
|
||
<xsd:attribute name="name" type="xsd:string"/>
|
||
<xsd:attribute name="SQL" type="xsd:string"/>
|
||
<xsd:attribute name="kind" type="xsd:string"/>
|
||
</xsd:complexType>
|
||
</PRE>
|
||
</DIV></DIV>
|
||
|
||
<P>User can do Command.setParameter(String name, Object value), getParameter(String name). Indexed set/getParameter() is available as before. Also <create>, <update>, <delete> from Config support named parameters.</P>
|
||
|
||
<P>example config:</P>
|
||
<DIV class="preformatted panel" style="border-width: 1px;"><DIV class="preformattedContent panelContent">
|
||
<PRE><Config xmlns="http:///org.apache.tuscany.das.rdb/config.xsd">
|
||
<Table tableName="CUSTOMER">
|
||
<create sql="insert into customer values (?, ?, ?)" >
|
||
<Parameters>
|
||
<Parameter name="ID" index="1"/>
|
||
<Parameter name="LASTNAME" index="1"/>
|
||
<Parameter name="ADDRESS" index="3"/>
|
||
</Parameters>
|
||
</create>
|
||
</Table>
|
||
<Command name="createCustomer" SQL="insert into CUSTOMER values ( ?, ?, ?)" kind="Insert">
|
||
<Parameter name="ID" index="1"/>
|
||
<Parameter name="LASTNAME" index="2"/>
|
||
<Parameter name="ADDRESS" index="3"/>
|
||
</Command>
|
||
</PRE>
|
||
</DIV></DIV>
|
||
|
||
<P>if +ve index is specified in Parameter, it is used, else auto-increment is used. As List is an ordered collection, the sequence(index value) appearing in the cofig file will be maintained. Partially specifying indexes is not supported (i.e. give index for 2 out of 3 params and leave one without it, is not supported)<BR>
|
||
Also, if indexes are specified, the ordering in config is flexible, i.e. below is valid.</P>
|
||
<DIV class="preformatted panel" style="border-width: 1px;"><DIV class="preformattedContent panelContent">
|
||
<PRE><Command name="createCustomer" SQL="insert into CUSTOMER values ( ?, ?, ?)" kind="Insert">
|
||
<Parameter name="LASTNAME" index="2"/>
|
||
<Parameter name="ID" index="1"/>
|
||
<Parameter name="ADDRESS" index="3"/>
|
||
</Command>
|
||
</PRE>
|
||
</DIV></DIV>
|
||
|
||
<P><B>Note</B> Convention over config is followed, if Parameters are not defined in config, the sequence<BR>
|
||
should match the table columns <B>convention</B>,else user should specify params on command in config and specify index attributes in them <B>config</B></P>
|
||
</DIV>
|
||
</DIV>
|
||
</DIV>
|
||
<!-- pageContent macro end -->
|
||
|
||
</TD>
|
||
</TR>
|
||
</TABLE>
|
||
|
||
<!-- footer macro -->
|
||
<SCRIPT src="http://www.google-analytics.com/urchin.js" type="text/javascript">
|
||
</SCRIPT>
|
||
<SCRIPT type="text/javascript">
|
||
_uacct = "UA-1174707-5";
|
||
urchinTracker();
|
||
</SCRIPT>
|
||
|
||
<A href="http://www.statcounter.com/" target="_blank"><IMG src="http://c26.statcounter.com/counter.php?sc_project=2619156&java=0&security=94bd7e7d&invisible=0" alt="website stats" border="0"></A>
|
||
|
||
<DIV class="footer">
|
||
Copyright <20> 2003-2012, The Apache Software Foundation </BR>
|
||
Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation.
|
||
</DIV>
|
||
<!-- footer macro end -->
|
||
|
||
</BODY>
|
||
</HTML>
|